Finding the Third Proportional to 259,706.25 and 540,189

Step by Step Solution

1. Step 1: Write the proportion equation
   259,706.25 : 540,189 = 540,189 : x
2. Step 2: Convert to fraction form
   259,706.25/540,189 = 540,189/x
3. Step 3: Cross multiply
   259,706.25x = 540,189 × 540,189
4. Step 4: Simplify right side
   259,706.25x = 291,804,155,721
5. Step 5: Solve for x
   x = 291,804,155,721/259,706.25
6. Step 6: Final answer
   x = 1,123,593.12